The invention relates to a preparation method of a WO3/TiOF2 compounded visible-light-driven photocatalyst. The method comprises the following steps: preparing tube-bundle-shaped TiOF2 having small crystalline grains and large specific surface area at low temperature by adopting an improved sol-gel method based on tetrabutyl titanate (TBT) as a precursor; and depositing nanoscale WO3 on the surface of the tube-bundle-shaped TiOF2 by adopting a chemical precipitation method. A property that WO3 can be excited within a visible light range can be fully utilized, and can be co-operated with a photocatalysis property of the tube-bundle-shaped TiOF2, so that a photocatalytic effect of WO3/TiOF2 is greatly improved, a degradation property on rhodamine B (RhB) is relatively good. According to the preparation method, in the preparation process, high temperature and high pressure environments are not required, reaction conditions are wild, the energy consumption is low, and the running cost is low; the photocatalyst has a very good application prospect.